Omron F3SG-SR Series, User Manual

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66
Chapter
2
Muting
F3SG-SR
User’s Manual
System Operation and Functions
2-13-2-2. Installation Example 1 of Standard Muting Mode (Using Two
Muting Sensors)
This is an example of two retro-reflective type photoelectric sensors used as muting sensors installed
in a cross pattern.
Use two sensors when the length L of the workpieces are not constant or are insufficient.
1.
Before a workpiece passes through
The output state of the muting sensors A1 and B1 are both OFF, and the safety function of the F3SG-
SR is enabled.
In this example where two muting sensors are used, the crossover point of the muting sensors A1 and
B1 is in the hazardous zone. This configuration prevents the Muting function from being enabled by a
person passing through the crossover point.
2.
MUTING started
When the muting sensors A1 and B1 are turned ON in this order, the F3SG-SR enters the MUTING
state. In this state, the safety function of F3SG-SR is disabled.
Workpiece
L
F3SG-SR
F3SG-SR
d1=D1
B1
Mirror
Mirror
A1
Hazardous zone
V
The crossover point of muting sensors
A1 and B1 must be located within the
hazardous zone
L: Length of workpiece
d1: Maximum distance required for the muting sensor to keep the muting function enabled
D1: Minimum distance required for the muting sensor to keep the muting function enabled
Workpiece
F3SG-SR
Hazardous zone
B1
Mirror
Mirror
A1